CVE-2021-23049

HIGH

BIG-IP <16.0.1.2, 15.1.x <15.1.3 - DoS

Title source: llm
STIX 2.1

Description

On BIG-IP version 16.0.x before 16.0.1.2 and 15.1.x before 15.1.3, when the iRules RESOLVER::summarize command is used on a virtual server, undisclosed requests can cause an increase in Traffic Management Microkernel (TMM) memory utilization resulting in an out-of-memory condition and a denial-of-service (DoS). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://support.f5.com/csp/article/K65397301

Scores

CVSS v3 7.5
EPSS 0.0089
EPSS Percentile 75.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-400
Status published
Products (11)
f5/big-ip_access_policy_manager 15.1.0 - 15.1.3
f5/big-ip_advanced_firewall_manager 15.1.0 - 15.1.3
f5/big-ip_advanced_web_application_firewall 15.1.0 - 15.1.3
f5/big-ip_analytics 15.1.0 - 15.1.3
f5/big-ip_application_acceleration_manager 15.1.0 - 15.1.3
f5/big-ip_application_security_manager 15.1.0 - 15.1.3
f5/big-ip_domain_name_system 15.1.0 - 15.1.3
f5/big-ip_fraud_protection_service 15.1.0 - 15.1.3
f5/big-ip_global_traffic_manager 15.1.0 - 15.1.3
f5/big-ip_link_controller 15.1.0 - 15.1.3
... and 1 more
Published Sep 14, 2021
Tracked Since Feb 18, 2026